Allocate a block of size bytes with alignment suitable for all
memory accesses (including vectors if available on the CPU) and
zero all the bytes of the block.
@param size Size in bytes for the memory block to be allocated.
@return Pointer to the allocated block, NULL if it cannot be allocated.
@see av_malloc()
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if available on the CPU) and zero all the bytes of the block. @param size Size in bytes for the memory block to be allocated. @return Pointer to the allocated block, NULL if it cannot be allocated. @see av_malloc()